20 Maritie Investigations in South Africa. Vol. V. 



those of the tropics. Somewhat better known are the following 

 species : 



1. Acl. Ploii, Rang. 



M. atlant. occid. 



2. Acl. striata (Q. et. G.). 



M. africano-indic. 

 [ 3. Acl. cirrhifera (Q. et G.). 

 M. africano-indic. 



4. Acl. impexa, B. 

 M. phillipin. 



5. Acl. ocelligera, B. 

 M. Siamense. 



6. Acl. varicolor, B. 



M. indicum. 



7. Acl. pusilla, B. 



M. indicum. 



Acl. cirrhifera, Q. et G. 

 Aplysia cirrhifera, Q. et G. Voy. de V Astrolabe, ii., 1832, p. 311, 



" pi. 24, fig. 8. 

 Aclesia cirrhifera, Q. et G. Ed. v. Martens, Beitr. Meeresfauna 



d. Insel Mauritius u. d. Seychellen., 1880, p. 308. 

 Aclesia cirrhifera, (Q. et G.) Bgh., I.e., 1900, pp. 351-360, 

 taf. xxix., figs. 28-31. 



PI. III., figs. 16-24 ; PI. IV., figs. 1-7. 



Two individuals were procured from the lagoon at Port Alfred, 

 five specimens caught at low- tide at Knysna along shore from jett^^ 

 towards village, one was procured at the mouth of Nahoon on 

 June 12, 1900, one more at East London in August, 1902. 



They were all of a very similar exterior ; but the colour of the 

 smaller was dark greenish gray, that of the lai-ger blackish gray, 

 with small black dots ; the foot always yellowish gray. The largest 

 individuals were 8 cm. long, by a height and a breadth of 4 ; the 

 height of the rhinophores and tentacles about 7 mm. ; the length of 

 the gill-slit 1-2 cm. ; the breadth of the foot 3 cm. ; the length 

 of the tail 1-5-2 cm. The other individuals 5-7 cm. long. 



The four specimens anatomically examined had a length of 

 4-6-7 cm. by a breadth of 2-6-4 and a height of 2*5-3 ; the height 

 of the rhinophores and the tentacles 4-5 mm., of the papillse of the 

 back -5 mm. ; the length of the gill-slit 6-10 mm. ; the breadth of 

 the foot 1-5-2-7 cm., the length of the tail 1-1-3 cm. — The animals 

 were very soft in consistence. 



